Pith Number

pith:FRNL33K3

pith:2007:FRNL33K3WA3IB2R6CVXNMWR6QV

not attested not anchored not stored refs pending

Numerical analysis of a nonlocal parabolic problem resulting from thermistor problem

Delfim F. M. Torres, Moulay Rchid Sidi Ammi

arxiv:0709.0129 v1 · 2007-09-02 · math.AP · cs.NA · math.NA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FRNL33K3WA3IB2R6CVXNMWR6QV}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-06-03T22:06:02.235469Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c5abded5bb03680ea3e156ed65a3e85780c93eca06cb6c11c42ed4cc2bdcb84

Aliases

arxiv: 0709.0129 · arxiv_version: 0709.0129v1 · doi: 10.48550/arxiv.0709.0129 · pith_short_12: FRNL33K3WA3I · pith_short_16: FRNL33K3WA3IB2R6 · pith_short_8: FRNL33K3

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/FRNL33K3WA3IB2R6CVXNMWR6QV \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 2c5abded5bb03680ea3e156ed65a3e85780c93eca06cb6c11c42ed4cc2bdcb84

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "28090bcc05d3c94a683c8744443a9a491843dd8e4350bb6f1b69221d60372de4",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "",
    "primary_cat": "math.AP",
    "submitted_at": "2007-09-02T21:07:18Z",
    "title_canon_sha256": "2e4db34fe22180cf6717e60c41e2cabc9f352045c784fd8437c70e3c425dffbb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0709.0129",
    "kind": "arxiv",
    "version": 1
  }
}